Re: It should be made illegal...
I don't think Chrome "slurps" anything if you only install it and don't use it -- with the exception of the installation itself, and what program "referred" you to it.
Their telemetry seems to be mostly related to crash reports and how often certain web features are used (so they know when they can deprecate obsolete ones.) Natch if you do Google searches they get that info, and if you're logged into your Google account all the stuff they sync for you goes in your profile.
Everyone assumes Chrome is recording all this info about them but there's little evidence for that. Realistically they don't need to bug the browser to create an advertising profile -- they already get that kind of data every time you visit a site that hosts their ads, whether you're using Chrome or not.